public static void HandleAuthLogOnChallenge(IClient client, IncomingAuthPacket packet)
{
Contract.Requires(client != null);
Contract.Requires(packet != null);
packet.ReadByte(); // unk
packet.ReadInt16(); // size
packet.ReadFourCC(); // gameName
packet.ReadByte(); // version1
packet.ReadByte(); // version2
packet.ReadByte(); // version3
packet.ReadInt16(); // build
packet.ReadFourCC(); // platform
packet.ReadFourCC(); // os
packet.ReadFourCC(); // country
packet.ReadInt32(); // timeZoneBias
packet.ReadInt32(); // ip
var usernameLength = packet.ReadByte();
var usernameBytes = packet.ReadBytes(usernameLength);
var username = Encoding.ASCII.GetString(usernameBytes);
SRPServer srpData = GetSRPDataForUserName(username);
if (srpData == null)
{
SendAuthenticationChallengeFailure(client, AuthResult.FailUnknownAccount);
}
else
{
client.UserData.SRP = srpData;
// make sure the result is at least 32 bytes long
var peData = srpData.PublicEphemeralValueB.GetBytes(32);
var publicEphemeral = new BigInteger(peData);
var rand = new BigInteger(new FastRandom(), 16 * 8);
SendAuthenticationChallengeSuccess(client,
publicEphemeral,
srpData.Parameters.Generator,
srpData.Parameters.Modulus,
srpData.Salt,
rand);
}
}
public static void HandleReconnectChallenge(IClient client, IncomingAuthPacket packet)
{
// structure is the same as AuthenticationLogOnChallenge
Contract.Requires(client != null);
Contract.Requires(packet != null);
packet.ReadByte(); // unk
packet.ReadInt16(); // size
packet.ReadFourCC(); // gameName
packet.ReadByte(); // version1
packet.ReadByte(); // version2
packet.ReadByte(); // version3
packet.ReadInt16(); // build
packet.ReadFourCC(); // platform
packet.ReadFourCC(); // os
packet.ReadFourCC(); // country
packet.ReadInt32(); // timeZoneBias
packet.ReadInt32(); // ip
var usernameLength = packet.ReadByte();
var usernameBytes = packet.ReadBytes(usernameLength);
Encoding.ASCII.GetString(usernameBytes); // username
// TODO fetch this from the database (or some other persistent storage)
BigInteger sessionKey = null;
if (sessionKey == null) {
client.Disconnect();
return;
}
//BigInteger rand = new BigInteger(new FastRandom(), 16 * 8);
//SendReconnectChallengeSuccess(client, rand);
//client.UserData.ReconnectRand = rand;
//client.UserData.Username = username;
}
